What is the appropriate position of the lateral trim lines for a LSO?

The appropriate position of the lateral trim lines for a lumbar-sacral orthosis (LSO) is crucial for providing optimal support and maintaining proper alignment of the spine and pelvis. The correct positioning of the trim lines, specifically flowing from anterior to posterior and being 1/2" to 1" superior to the greater trochanter, ensures that the orthosis effectively stabilizes the lumbar region while allowing for adequate hip motion.

When the trim lines flow from anterior to posterior, it provides a balance of support and mobility. The positioning above the greater trochanter is important because it allows the orthosis to stabilize the pelvis and lower spine without inhibiting the natural movement of the hip joint. Proper alignment and positioning can help alleviate pain, improve function, and enhance the overall efficacy of the orthotic device.

This positioning is also designed to accommodate the anatomical features of the pelvis and spine, ensuring that the device is secure and does not cause discomfort or pressure points during activity. Understanding this alignment helps practitioners to customize treatments and ensures that the orthosis serves its purpose effectively, maintaining both stability and functionality for the patient.